From b89127e20fe4a0e0c2ab526db0301337d4303cd2 Mon Sep 17 00:00:00 2001
From: Richard Guenther <rguenther@suse.de>
Date: Sun, 11 Oct 2009 11:24:10 +0000
Subject: [PATCH] re PR tree-optimization/41555 (possible miscompilation in
 whole-program mode)

2009-10-11  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/41555
	* gcc.dg/torture/pr41555.c: New testcase.

From-SVN: r152639
---
 gcc/testsuite/ChangeLog                |   5 ++
 gcc/testsuite/gcc.dg/torture/pr41555.c | 118 +++++++++++++++++++++++++
 2 files changed, 123 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/torture/pr41555.c

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 7a68fc9cde3..45c79203295 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2009-10-11  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/41555
+	* gcc.dg/torture/pr41555.c: New testcase.
+
 2009-10-10  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR libgfortran/35862
diff --git a/gcc/testsuite/gcc.dg/torture/pr41555.c b/gcc/testsuite/gcc.dg/torture/pr41555.c
new file mode 100644
index 00000000000..219b34275b7
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr41555.c
@@ -0,0 +1,118 @@
+/* { dg-do run } */
+
+#include <stdint.h>
+#include <limits.h>
+
+extern void abort (void);
+
+static uint64_t safe_div_func_uint64_t_u_u (uint64_t _ui1, uint64_t _ui2)
+{
+  if (_ui2==0) return _ui1;
+  return _ui1 / _ui2;
+}
+
+static int64_t safe_div_func_int64_t_s_s (int64_t _si1, int64_t _si2)
+{
+  if (_si2==0 || (_si1==INT64_MIN && _si2==-1)) return _si1;
+  return _si1 / _si2;
+}
+
+#define safe_add_macro_int8_t_s_s(si1,si2) \
+                ((((((int8_t)(si1))>((int8_t)0)) && (((int8_t)(si2))>((int8_t)0)) && (((int8_t)(si1)) > ((INT8_MAX)-((int8_t)(si2))))) \
+                  || ((((int8_t)(si1))<((int8_t)0)) && (((int8_t)(si2))<((int8_t)0)) && (((int8_t)(si1)) < ((INT8_MIN)-((int8_t)(si2)))))) \
+                 ? ((int8_t)(si1)) \
+                 : (((int8_t)(si1)) + ((int8_t)(si2))) \
+                 ) 
+
+static int8_t
+safe_add_func_int8_t_s_s(int8_t _si1, int8_t _si2)
+{
+  return safe_add_macro_int8_t_s_s(_si1,_si2);
+}
+
+#define safe_rshift_macro_uint64_t_u_s(left,right) \
+        (((((int)(right)) < ((uint64_t)0)) \
+                         || (((int)(right)) >= sizeof(uint64_t)*CHAR_BIT)) \
+                        ? ((uint64_t)(left)) \
+                        : (((uint64_t)(left)) >> ((int)(right))))
+
+static uint64_t
+safe_rshift_func_uint64_t_u_s(uint64_t _left, int _right)
+{
+  return safe_rshift_macro_uint64_t_u_s(_left,_right);
+}
+
+#define safe_mul_macro_int32_t_s_s(si1,si2) \
+  ((((((int32_t)(si1)) > ((int32_t)0)) && (((int32_t)(si2)) > ((int32_t)0)) && (((int32_t)(si1)) > ((INT32_MAX) / ((int32_t)(si2))))) || \
+  ((((int32_t)(si1)) > ((int32_t)0)) && (((int32_t)(si2)) <= ((int32_t)0)) && (((int32_t)(si2)) < ((INT32_MIN) / ((int32_t)(si1))))) || \
+  ((((int32_t)(si1)) <= ((int32_t)0)) && (((int32_t)(si2)) > ((int32_t)0)) && (((int32_t)(si1)) < ((INT32_MIN) / ((int32_t)(si2))))) || \
+  ((((int32_t)(si1)) <= ((int32_t)0)) && (((int32_t)(si2)) <= ((int32_t)0)) && (((int32_t)(si1)) != ((int32_t)0)) && (((int32_t)(si2)) < ((INT32_MAX) / ((int32_t)(si1)))))) \
+  ? ((int32_t)(si1)) \
+  : ((int32_t)(si1)) * ((int32_t)(si2)))
+
+static int32_t
+safe_mul_func_int32_t_s_s (int32_t _si1, int32_t _si2)
+{
+  return safe_mul_macro_int32_t_s_s(_si1,_si2);
+}
+
+static int8_t g_39;
+static volatile uint8_t g_46;
+static uint8_t g_47;
+static uint8_t *g_62;
+static uint8_t g_79;
+static int8_t g_101 = -1L;
+static uint8_t *g_114;
+static uint8_t *g_126;
+static uint8_t g_133;
+
+static uint16_t func_35 (int32_t * p_36, uint64_t p_37, uint32_t p_38);
+static uint16_t func_35 (int32_t * p_36, uint64_t p_37, uint32_t p_38)
+{
+  if (g_62 != 0)
+    abort ();
+  for (g_39 = 1; g_39 < 0; g_39 = 1)
+    {
+    }
+  return 1;
+}
+
+static int32_t func_19 (int32_t p_20);
+static int32_t func_19 (int32_t p_20)
+{
+  if (1 !=
+      safe_div_func_uint64_t_u_u ((safe_div_func_int64_t_s_s (p_20, 1)),
+                                  g_101))
+    {
+      func_35 (0, 1 <= (safe_add_func_int8_t_s_s (g_47, g_46)) > p_20 < 1, 1);
+      g_133 = 1;
+      if (g_114 != 0)
+	abort ();
+      if (g_126 != 0)
+	abort ();
+    }
+  return 1;
+}
+
+static uint8_t func_2 (int32_t p_6);
+static uint8_t func_2 (int32_t p_6)
+{
+  for (1; p_6 > 1; 1)
+    return 0;
+  func_19 (g_79);
+  if (safe_mul_func_int32_t_s_s
+      ((0, 1 < (safe_rshift_func_uint64_t_u_s (1 ^ p_6, 1))),
+       (func_35 (&p_6, 1, 1) < 1)))
+    {
+    }
+  return 1;
+}
+
+int main (void)
+{
+  func_2 (1);
+  if (g_133 != 1)
+    abort ();
+  return 0;
+}
+